Order Chroococcales

Family Chroococcaceae Rabenhorst

Genus Chroococcus Nägeli

• Chroococcus limneticus Lemmermann – freshwater, Verkhneye (Upper) Lake; planktonic (Бизина, 1998: as Gloeocapsa limnetica (Lemmermann) Hollerbach). Planktonic; Ershovsky Lakes; common (Own data).
• Chroococcus minimus (Keissler) Lemmermann – planktonic, periphyton on dying filamentous algae; supralittoral basins, Verkhneye (Upper) Lake; common (Own data: Gloeocapsa minima (Keissl.) Hollerbach in Elenkin).
• Chroococcus turgidus (Kützing) Nägeli – planktonic, benthic; marine, freshwater, brackish-water, epiphyte; common, sometimes dominant (Own data: Gloeocapsa turgida (Kützing) Hollerbach in Elenkin). Coastal; on mosses; sporadic (Давыдов, 2006).

Genus Dactylococcopsis Hansgirg

• Dactylococcopsis acicularis Lemmermann – freshwater, Verkhneye (Upper) Lake; planktonic (Бизина, 1998). Supralittoral; freshwater basins, lakes; common (Own data).
• Dactylococcopsis fascicularis Lemmermann – freshwater, Verkhneye (Upper) Lake; planktonic; rare (Own data).
• Dactylococcopsis raphidioides Hansgirg – freshwater, lakes; planktonic; common (Own data).

Genus Gloeocapsopsis Geitler ex Komárek

• Gloeocapsopsis crepidinum (Thuret) Geitler ex Komàrek – on coastal rocks and cliffs; rare; planktonic; Verkhneye (Upper) Lake; common (Own data: Gloeocapsa crepidinum Thuret).
• Gloeocapsopsis magma (Brébisson) Komárek & Anagostidis – benthic (pink silt); Kislosladkoye (Sour-Sweet) Lake; common (Own data: Gloeocapsa magma (Brébisson) Kützing). Supralittoral; on stones; sporadic (Давыдов, 2006).

Family Cyanobacteriaceae

Genus Aphanothece Nägeli

• Aphanothece clathrata W. West & G. S. West – freshwater, Verkhneye (Upper) Lake; planktonic; rare (Own data).
• Aphanothece curvata Lagerheim – littoral; epiphyte; on sick Zostera plants; common (Own data).
• Aphanothece saxicola Nägeli – supralittoral; on rocks, mosses; sporadic (Давыдов, 2006).

Genus Cyanothece Komárek

• Cyanothece aeruginosa (Nägeli) Komárek – planktonic; Verkhneye (Upper) Lake; dominant; Verkhneye Ershovskoe lake; rare (own data) (as Synechococcus aeruginosus Nägeli).

Genus Gloeothece Nägeli

• Gloeothece palea (Kützing) Nägeli – supralittoral; on mosses; sporadic (Давыдов, 2006).

Family Dermocarpellaceae T. Christensen

Genus Cyanocystis Borzi

• Cyanocystis hemispaerica (Setchel & Gardner) Kaas ( = Dermocarpa hemispaerica Setchel & Gardner) – epiphyte on different red filamentous algae, common, Velikaya Salma.
• Cyanocystis olivacea (Reinsch) Komárek & Anagnostidis ( = Dermocarpa olivacea (Reinsch) Tilden) — epiphyte on red filamentous algae, streams, Velikaya Salma.
• Cyanocystis versicolor Borzi ( = Dermocarpa versicolor (Borzi) Geitler) – epiphyte on green algae Сladophora and on diatoms Melosira; rare, the mouth of the brook, Kindo peninsula.

Genus Dermocarpella Lemmermann

• Dermocarpella gilkeyae (Setchell & Gardner) Komárek & Anagnostidis – epiphyte; on filamentous algae, Velikaya Salma; rare (own data: Xenococcus gilkeyae Setchell & Gardner).

Kislaya inlet, Rugozerskaya Bay, and Chrenorechenskaya Bay

• Dermocarpella prasina (Reinsch) Komárek & Anagnostidis ( = Dermocarpa prasina (Reinsch) Bornet & Thuret) — epiphyte on filamentous algae, common, littoral and sublittoral, Velikaya Salma, Kislaya inlet, Rugozerskaya Bay, and Chrenorechenskaya Bay

Genus Sphaenosiphon Reinsch

• Sphaenosiphon minima (Geitler) P. Silva ( = Dermocarpa minima Geitler) — epiphyte on green algae Cladophora fracta, rare, littoral, Velikaya Salma.

Genus Stanieria Komárek & Anagnostidis

• Stanieria sphaerica (Setchel & Gardner) K. Anagnostidis & A. Pantazidou ( = Dermocarpa sphaerica Setchel & Gardner) = epiphyte on filamentous algae, diatoms, red and green algae, common, littoral, Velikaya Salma.
• Stanieria sublitorali (Lindstedt) K. Anagnostidis & A. Pantazidou ( = Dermocarpa sublitoralis Lindstedt) — epiphyte on filamentous algae, common, sublittoral , Velikaya Salma.

Family Entophysalidaceae Geitler

Genus Chlorogloea Wille

• Chlorogloea tuberculosa (Hansgirg) Wille – marine, sublittoral; epiphyte on Laminaria; common (own data).

Genus Entophysalis Kützing

• Entophysalis granulosa Kützing – on cliffs; Cape Kindo, Kastyan island; common (own data)

Family Gomphosphaeriaceae Elenkin

Genus Gomphosphaeria Kützing

• Gomphosphaeria aponina Kützing – planktonic; marine, freshwater, brackish-water.; common (own data).

Family Hydrococcaceae Kützing

Genus Pleurocapsa Thuret in Hauck

• Pleurocapsa fuliginosa Hauck – fouling; on littoral stones; common (own data).

Family Microcystaceae Elenkin

Genus Gloeocapsa Kützing

• Gloeocapsa alpina (Nägeli) Brand – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
• Gloeocapsa haematodes Kützing – benthic (pink silt); Kislo-Sladkoye (Sour-Sweet) Lake; dominant (own data).
• Gloeocapsa minor (Kützing) Hollerbach – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
• Gloeocapsa punctata Nägeli – planktonic; Verkhneye (Upper) Lake; rare (own data).
• Gloeocapsa varia Hollerbach – benthic; brackish-water supralittoral basins; Kastyan island; common; Cape Kindo; rare (own data).

Genus Microcystis Kützing ex Lemmermann

• Microcystis aeruginosa (Kützing) Kützing – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
• Microcystis flos-aquae (Wittrock) Kirchner – coastal; on dead mosses; sporadic (Давыдов, 2006).
• Microcystis minuta Kylin – plankton, benthos; Kislo-Sladkoye (Sour-Sweet) Lake; dominant (own data).
• Microcystis pulverea (Wood) Forti in De Toni – planktonic; marine; rare; freshwater; from rare to dominant (own data).

Genus Snowella Elenkin

• Snowella septentrionalis Komárek & Hindák 1988 – freshwater, planktonic, in meromictic lake Trekhtzvetnoe (Ivanova, 2025, personal communication).

Family Xenococcaceae Ercegovic

Genus Xenococcus Thuret in Bornet & Thuret

• Xenococcus acervatus Setchell & Gardner – epiphyte; on filamentous algae; Velikaya Salma; rare (own data).
• Xenococcus pyriformis Setchell & Gardner – epiphyte; на filamentous algae; Velikaya Salma; rare, sometimes dominant (own data).

Genus Xenotholos M. Gold-Morgan, G. Montejano & J. Komárek

• Xenotholos kerneri (Hansgirg) M. Gold-Morgan, G. Montejano & J. Komárek – epiphyte; on mosses, water plants; Verkhneye (Upper) Lake, swamps; rare (own data: Xenococcus kerneri Hansgirg).

rus: Порядок Chroococcales